CVE-2023-39477: ignition DoS (CVSS 7.5)

Description

Inductive Automation Ignition ConditionRefresh Resource Exhaustion Denial-of-Service Vulnerability. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Inductive Automation Ignition. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of OPC UA ConditionRefresh requests. By sending a large number of requests, an attacker can consume all available resources on the server. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-20499.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-400 Uncontrolled Resource Consumption

Affected Products

Vendor	Product	Versions
inductiveautomation	ignition	8.1.0 — 8.1.33

References

Other References

https://inductiveautomation.com/downloads/releasenotes/8.1.33 https://www.zerodayinitiative.com/advisories/ZDI-23-1050/ https://inductiveautomation.com/downloads/releasenotes/8.1.33 https://www.zerodayinitiative.com/advisories/ZDI-23-1050/

Frequently Asked Questions

What is CVE-2023-39477? +

Inductive Automation Ignition ConditionRefresh Resource Exhaustion Denial-of-Service Vulnerability. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Inductive Automation Ignition. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of OPC UA ConditionRefresh requests. By sending a large number of requests, an attacker can consume all available resources on the server. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-20499. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2023-39477? +

CVE-2023-39477 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2023-39477? +

CVE-2023-39477 affects products from inductiveautomation, specifically: ignition. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-39477? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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